"芦屋の統計資料:毎月人口(町別人口及び世帯数) 令和3年" [Ashiya statistical data: Monthly population (population by town and number of households) Reiwa 3]. Ashiya City. Archived from the original on 2011-04-10. Retrieved 2021-03-31.
"芦屋の統計資料:毎月人口(町別人口及び世帯数) 令和3年" [Ashiya statistical data: Monthly population (population by town and number of households) Reiwa 3]. Ashiya City. Archived from the original on 2011-04-10. Retrieved 2021-03-31.